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| author | Marc Zyngier <[email protected]> | 2019-04-15 21:21:24 +0000 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2019-04-26 15:30:11 +0000 |
| commit | 517953c2c47f9c00a002f588ac856a5bc70cede3 (patch) | |
| tree | a49d9fa32f4bb7a764feb7cc73d5ed20d63558bd /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | arm64: Advertise mitigation of Spectre-v2, or lack thereof (diff) | |
| download | kernel-517953c2c47f9c00a002f588ac856a5bc70cede3.tar.gz kernel-517953c2c47f9c00a002f588ac856a5bc70cede3.zip | |
arm64: Use firmware to detect CPUs that are not affected by Spectre-v2
The SMCCC ARCH_WORKAROUND_1 service can indicate that although the
firmware knows about the Spectre-v2 mitigation, this particular
CPU is not vulnerable, and it is thus not necessary to call
the firmware on this CPU.
Let's use this information to our benefit.
Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Jeremy Linton <[email protected]>
Reviewed-by: Andre Przywara <[email protected]>
Reviewed-by: Catalin Marinas <[email protected]>
Tested-by: Stefan Wahren <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions